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Commit | Line | Data |
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785b93ef DA |
1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. | |
3 | * Copyright (c) 2006-2008 Intel Corporation | |
4 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
5 | * | |
6 | * DRM framebuffer helper functions | |
7 | * | |
8 | * Permission to use, copy, modify, distribute, and sell this software and its | |
9 | * documentation for any purpose is hereby granted without fee, provided that | |
10 | * the above copyright notice appear in all copies and that both that copyright | |
11 | * notice and this permission notice appear in supporting documentation, and | |
12 | * that the name of the copyright holders not be used in advertising or | |
13 | * publicity pertaining to distribution of the software without specific, | |
14 | * written prior permission. The copyright holders make no representations | |
15 | * about the suitability of this software for any purpose. It is provided "as | |
16 | * is" without express or implied warranty. | |
17 | * | |
18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
24 | * OF THIS SOFTWARE. | |
25 | * | |
26 | * Authors: | |
27 | * Dave Airlie <airlied@linux.ie> | |
28 | * Jesse Barnes <jesse.barnes@intel.com> | |
29 | */ | |
d56b1b9d SK |
30 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
31 | ||
3b40a443 | 32 | #include <linux/kernel.h> |
785b93ef | 33 | #include <linux/sysrq.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
785b93ef | 35 | #include <linux/fb.h> |
e0cd3608 | 36 | #include <linux/module.h> |
760285e7 DH |
37 | #include <drm/drmP.h> |
38 | #include <drm/drm_crtc.h> | |
39 | #include <drm/drm_fb_helper.h> | |
40 | #include <drm/drm_crtc_helper.h> | |
785b93ef | 41 | |
6fcefd56 DA |
42 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
43 | MODULE_DESCRIPTION("DRM KMS helper"); | |
44 | MODULE_LICENSE("GPL and additional rights"); | |
45 | ||
785b93ef DA |
46 | static LIST_HEAD(kernel_fb_helper_list); |
47 | ||
d0ddc033 DV |
48 | /** |
49 | * DOC: fbdev helpers | |
50 | * | |
51 | * The fb helper functions are useful to provide an fbdev on top of a drm kernel | |
52 | * mode setting driver. They can be used mostly independantely from the crtc | |
53 | * helper functions used by many drivers to implement the kernel mode setting | |
54 | * interfaces. | |
55 | */ | |
56 | ||
0b4c0f3f DA |
57 | /* simple single crtc case helper function */ |
58 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) | |
d50ba256 | 59 | { |
0b4c0f3f DA |
60 | struct drm_device *dev = fb_helper->dev; |
61 | struct drm_connector *connector; | |
62 | int i; | |
d50ba256 | 63 | |
0b4c0f3f DA |
64 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
65 | struct drm_fb_helper_connector *fb_helper_connector; | |
66 | ||
67 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); | |
68 | if (!fb_helper_connector) | |
69 | goto fail; | |
d50ba256 | 70 | |
0b4c0f3f DA |
71 | fb_helper_connector->connector = connector; |
72 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; | |
73 | } | |
d50ba256 | 74 | return 0; |
0b4c0f3f DA |
75 | fail: |
76 | for (i = 0; i < fb_helper->connector_count; i++) { | |
77 | kfree(fb_helper->connector_info[i]); | |
78 | fb_helper->connector_info[i] = NULL; | |
79 | } | |
80 | fb_helper->connector_count = 0; | |
81 | return -ENOMEM; | |
d50ba256 | 82 | } |
0b4c0f3f | 83 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
d50ba256 | 84 | |
0b4c0f3f | 85 | static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) |
d50ba256 | 86 | { |
0b4c0f3f DA |
87 | struct drm_fb_helper_connector *fb_helper_conn; |
88 | int i; | |
d50ba256 | 89 | |
0b4c0f3f | 90 | for (i = 0; i < fb_helper->connector_count; i++) { |
1794d257 CW |
91 | struct drm_cmdline_mode *mode; |
92 | struct drm_connector *connector; | |
d50ba256 DA |
93 | char *option = NULL; |
94 | ||
0b4c0f3f | 95 | fb_helper_conn = fb_helper->connector_info[i]; |
1794d257 CW |
96 | connector = fb_helper_conn->connector; |
97 | mode = &fb_helper_conn->cmdline_mode; | |
0b4c0f3f | 98 | |
d50ba256 | 99 | /* do something on return - turn off connector maybe */ |
1794d257 | 100 | if (fb_get_options(drm_get_connector_name(connector), &option)) |
d50ba256 DA |
101 | continue; |
102 | ||
1794d257 CW |
103 | if (drm_mode_parse_command_line_for_connector(option, |
104 | connector, | |
105 | mode)) { | |
106 | if (mode->force) { | |
107 | const char *s; | |
108 | switch (mode->force) { | |
6c91083f SK |
109 | case DRM_FORCE_OFF: |
110 | s = "OFF"; | |
111 | break; | |
112 | case DRM_FORCE_ON_DIGITAL: | |
113 | s = "ON - dig"; | |
114 | break; | |
1794d257 | 115 | default: |
6c91083f SK |
116 | case DRM_FORCE_ON: |
117 | s = "ON"; | |
118 | break; | |
1794d257 CW |
119 | } |
120 | ||
121 | DRM_INFO("forcing %s connector %s\n", | |
122 | drm_get_connector_name(connector), s); | |
123 | connector->force = mode->force; | |
124 | } | |
125 | ||
126 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
127 | drm_get_connector_name(connector), | |
128 | mode->xres, mode->yres, | |
129 | mode->refresh_specified ? mode->refresh : 60, | |
130 | mode->rb ? " reduced blanking" : "", | |
131 | mode->margins ? " with margins" : "", | |
132 | mode->interlace ? " interlaced" : ""); | |
133 | } | |
134 | ||
d50ba256 DA |
135 | } |
136 | return 0; | |
137 | } | |
138 | ||
99231028 JW |
139 | static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) |
140 | { | |
141 | uint16_t *r_base, *g_base, *b_base; | |
142 | int i; | |
143 | ||
144 | r_base = crtc->gamma_store; | |
145 | g_base = r_base + crtc->gamma_size; | |
146 | b_base = g_base + crtc->gamma_size; | |
147 | ||
148 | for (i = 0; i < crtc->gamma_size; i++) | |
149 | helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); | |
150 | } | |
151 | ||
152 | static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) | |
153 | { | |
154 | uint16_t *r_base, *g_base, *b_base; | |
155 | ||
ebe0f244 LP |
156 | if (crtc->funcs->gamma_set == NULL) |
157 | return; | |
158 | ||
99231028 JW |
159 | r_base = crtc->gamma_store; |
160 | g_base = r_base + crtc->gamma_size; | |
161 | b_base = g_base + crtc->gamma_size; | |
162 | ||
163 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); | |
164 | } | |
165 | ||
1a7aba7f JB |
166 | int drm_fb_helper_debug_enter(struct fb_info *info) |
167 | { | |
168 | struct drm_fb_helper *helper = info->par; | |
169 | struct drm_crtc_helper_funcs *funcs; | |
170 | int i; | |
171 | ||
172 | if (list_empty(&kernel_fb_helper_list)) | |
173 | return false; | |
174 | ||
175 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
176 | for (i = 0; i < helper->crtc_count; i++) { | |
177 | struct drm_mode_set *mode_set = | |
178 | &helper->crtc_info[i].mode_set; | |
179 | ||
180 | if (!mode_set->crtc->enabled) | |
181 | continue; | |
182 | ||
183 | funcs = mode_set->crtc->helper_private; | |
99231028 | 184 | drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); |
1a7aba7f JB |
185 | funcs->mode_set_base_atomic(mode_set->crtc, |
186 | mode_set->fb, | |
187 | mode_set->x, | |
413d45d3 | 188 | mode_set->y, |
21c74a8e | 189 | ENTER_ATOMIC_MODE_SET); |
1a7aba7f JB |
190 | } |
191 | } | |
192 | ||
193 | return 0; | |
194 | } | |
195 | EXPORT_SYMBOL(drm_fb_helper_debug_enter); | |
196 | ||
197 | /* Find the real fb for a given fb helper CRTC */ | |
198 | static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) | |
199 | { | |
200 | struct drm_device *dev = crtc->dev; | |
201 | struct drm_crtc *c; | |
202 | ||
203 | list_for_each_entry(c, &dev->mode_config.crtc_list, head) { | |
204 | if (crtc->base.id == c->base.id) | |
205 | return c->fb; | |
206 | } | |
207 | ||
208 | return NULL; | |
209 | } | |
210 | ||
211 | int drm_fb_helper_debug_leave(struct fb_info *info) | |
212 | { | |
213 | struct drm_fb_helper *helper = info->par; | |
214 | struct drm_crtc *crtc; | |
215 | struct drm_crtc_helper_funcs *funcs; | |
216 | struct drm_framebuffer *fb; | |
217 | int i; | |
218 | ||
219 | for (i = 0; i < helper->crtc_count; i++) { | |
220 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
221 | crtc = mode_set->crtc; | |
222 | funcs = crtc->helper_private; | |
223 | fb = drm_mode_config_fb(crtc); | |
224 | ||
225 | if (!crtc->enabled) | |
226 | continue; | |
227 | ||
228 | if (!fb) { | |
229 | DRM_ERROR("no fb to restore??\n"); | |
230 | continue; | |
231 | } | |
232 | ||
99231028 | 233 | drm_fb_helper_restore_lut_atomic(mode_set->crtc); |
1a7aba7f | 234 | funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, |
21c74a8e | 235 | crtc->y, LEAVE_ATOMIC_MODE_SET); |
1a7aba7f JB |
236 | } |
237 | ||
238 | return 0; | |
239 | } | |
240 | EXPORT_SYMBOL(drm_fb_helper_debug_leave); | |
241 | ||
e8e7a2b8 DA |
242 | bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) |
243 | { | |
244 | bool error = false; | |
245 | int i, ret; | |
246 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
247 | struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; | |
2d13b679 | 248 | ret = drm_mode_set_config_internal(mode_set); |
e8e7a2b8 DA |
249 | if (ret) |
250 | error = true; | |
251 | } | |
252 | return error; | |
253 | } | |
254 | EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode); | |
255 | ||
78b9c353 | 256 | static bool drm_fb_helper_force_kernel_mode(void) |
785b93ef | 257 | { |
785b93ef DA |
258 | bool ret, error = false; |
259 | struct drm_fb_helper *helper; | |
260 | ||
261 | if (list_empty(&kernel_fb_helper_list)) | |
262 | return false; | |
263 | ||
264 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
e8e7a2b8 DA |
265 | if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF) |
266 | continue; | |
267 | ||
268 | ret = drm_fb_helper_restore_fbdev_mode(helper); | |
269 | if (ret) | |
270 | error = true; | |
785b93ef DA |
271 | } |
272 | return error; | |
273 | } | |
274 | ||
275 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
276 | void *panic_str) | |
277 | { | |
d68752cf HD |
278 | /* |
279 | * It's a waste of time and effort to switch back to text console | |
280 | * if the kernel should reboot before panic messages can be seen. | |
281 | */ | |
282 | if (panic_timeout < 0) | |
283 | return 0; | |
284 | ||
d56b1b9d | 285 | pr_err("panic occurred, switching back to text console\n"); |
785b93ef | 286 | return drm_fb_helper_force_kernel_mode(); |
785b93ef DA |
287 | } |
288 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
289 | ||
290 | static struct notifier_block paniced = { | |
291 | .notifier_call = drm_fb_helper_panic, | |
292 | }; | |
293 | ||
294 | /** | |
295 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
296 | * | |
297 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
298 | */ | |
299 | void drm_fb_helper_restore(void) | |
300 | { | |
301 | bool ret; | |
302 | ret = drm_fb_helper_force_kernel_mode(); | |
303 | if (ret == true) | |
304 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
305 | } | |
306 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
307 | ||
bea1d35b | 308 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
309 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
310 | { | |
311 | drm_fb_helper_restore(); | |
312 | } | |
313 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
314 | ||
1495cc9d | 315 | static void drm_fb_helper_sysrq(int dummy1) |
785b93ef DA |
316 | { |
317 | schedule_work(&drm_fb_helper_restore_work); | |
318 | } | |
319 | ||
320 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
321 | .handler = drm_fb_helper_sysrq, | |
322 | .help_msg = "force-fb(V)", | |
323 | .action_msg = "Restore framebuffer console", | |
324 | }; | |
b8c40d62 RD |
325 | #else |
326 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; | |
bea1d35b | 327 | #endif |
785b93ef | 328 | |
3a8148c5 | 329 | static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode) |
785b93ef DA |
330 | { |
331 | struct drm_fb_helper *fb_helper = info->par; | |
332 | struct drm_device *dev = fb_helper->dev; | |
333 | struct drm_crtc *crtc; | |
023eb571 | 334 | struct drm_connector *connector; |
023eb571 | 335 | int i, j; |
785b93ef DA |
336 | |
337 | /* | |
3a8148c5 | 338 | * For each CRTC in this fb, turn the connectors on/off. |
785b93ef | 339 | */ |
84849903 | 340 | drm_modeset_lock_all(dev); |
e87b2c42 | 341 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 | 342 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
785b93ef | 343 | |
8be48d92 DA |
344 | if (!crtc->enabled) |
345 | continue; | |
346 | ||
3a8148c5 | 347 | /* Walk the connectors & encoders on this fb turning them on/off */ |
023eb571 JB |
348 | for (j = 0; j < fb_helper->connector_count; j++) { |
349 | connector = fb_helper->connector_info[j]->connector; | |
e04190e0 | 350 | connector->funcs->dpms(connector, dpms_mode); |
58495563 | 351 | drm_object_property_set_value(&connector->base, |
3a8148c5 | 352 | dev->mode_config.dpms_property, dpms_mode); |
785b93ef | 353 | } |
785b93ef | 354 | } |
84849903 | 355 | drm_modeset_unlock_all(dev); |
785b93ef DA |
356 | } |
357 | ||
358 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
359 | { | |
360 | switch (blank) { | |
731b5a15 | 361 | /* Display: On; HSync: On, VSync: On */ |
785b93ef | 362 | case FB_BLANK_UNBLANK: |
3a8148c5 | 363 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON); |
785b93ef | 364 | break; |
731b5a15 | 365 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 366 | case FB_BLANK_NORMAL: |
3a8148c5 | 367 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 368 | break; |
731b5a15 | 369 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef | 370 | case FB_BLANK_HSYNC_SUSPEND: |
3a8148c5 | 371 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 372 | break; |
731b5a15 | 373 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef | 374 | case FB_BLANK_VSYNC_SUSPEND: |
3a8148c5 | 375 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND); |
785b93ef | 376 | break; |
731b5a15 | 377 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef | 378 | case FB_BLANK_POWERDOWN: |
3a8148c5 | 379 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF); |
785b93ef DA |
380 | break; |
381 | } | |
382 | return 0; | |
383 | } | |
384 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
385 | ||
386 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
387 | { | |
388 | int i; | |
389 | ||
0b4c0f3f DA |
390 | for (i = 0; i < helper->connector_count; i++) |
391 | kfree(helper->connector_info[i]); | |
392 | kfree(helper->connector_info); | |
a1b7736d | 393 | for (i = 0; i < helper->crtc_count; i++) { |
785b93ef | 394 | kfree(helper->crtc_info[i].mode_set.connectors); |
a1b7736d SH |
395 | if (helper->crtc_info[i].mode_set.mode) |
396 | drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); | |
397 | } | |
785b93ef DA |
398 | kfree(helper->crtc_info); |
399 | } | |
400 | ||
4abe3520 DA |
401 | int drm_fb_helper_init(struct drm_device *dev, |
402 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 403 | int crtc_count, int max_conn_count) |
785b93ef | 404 | { |
785b93ef | 405 | struct drm_crtc *crtc; |
785b93ef DA |
406 | int i; |
407 | ||
4abe3520 | 408 | fb_helper->dev = dev; |
4abe3520 DA |
409 | |
410 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
411 | ||
412 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
413 | if (!fb_helper->crtc_info) | |
785b93ef DA |
414 | return -ENOMEM; |
415 | ||
4abe3520 DA |
416 | fb_helper->crtc_count = crtc_count; |
417 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
418 | if (!fb_helper->connector_info) { | |
419 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
420 | return -ENOMEM; |
421 | } | |
4abe3520 | 422 | fb_helper->connector_count = 0; |
785b93ef DA |
423 | |
424 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 425 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
426 | kcalloc(max_conn_count, |
427 | sizeof(struct drm_connector *), | |
428 | GFP_KERNEL); | |
429 | ||
4a1b0714 | 430 | if (!fb_helper->crtc_info[i].mode_set.connectors) |
785b93ef | 431 | goto out_free; |
4abe3520 | 432 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
433 | } |
434 | ||
435 | i = 0; | |
436 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 | 437 | fb_helper->crtc_info[i].mode_set.crtc = crtc; |
785b93ef DA |
438 | i++; |
439 | } | |
e9ad3181 | 440 | |
785b93ef DA |
441 | return 0; |
442 | out_free: | |
4abe3520 | 443 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
444 | return -ENOMEM; |
445 | } | |
4abe3520 DA |
446 | EXPORT_SYMBOL(drm_fb_helper_init); |
447 | ||
448 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
449 | { | |
450 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
451 | list_del(&fb_helper->kernel_fb_list); | |
452 | if (list_empty(&kernel_fb_helper_list)) { | |
d56b1b9d | 453 | pr_info("drm: unregistered panic notifier\n"); |
4abe3520 DA |
454 | atomic_notifier_chain_unregister(&panic_notifier_list, |
455 | &paniced); | |
456 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
457 | } | |
458 | } | |
459 | ||
460 | drm_fb_helper_crtc_free(fb_helper); | |
461 | ||
4abe3520 DA |
462 | } |
463 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 464 | |
c850cb78 | 465 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
466 | u16 blue, u16 regno, struct fb_info *info) |
467 | { | |
468 | struct drm_fb_helper *fb_helper = info->par; | |
469 | struct drm_framebuffer *fb = fb_helper->fb; | |
470 | int pindex; | |
471 | ||
c850cb78 DA |
472 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
473 | u32 *palette; | |
474 | u32 value; | |
475 | /* place color in psuedopalette */ | |
476 | if (regno > 16) | |
477 | return -EINVAL; | |
478 | palette = (u32 *)info->pseudo_palette; | |
479 | red >>= (16 - info->var.red.length); | |
480 | green >>= (16 - info->var.green.length); | |
481 | blue >>= (16 - info->var.blue.length); | |
482 | value = (red << info->var.red.offset) | | |
483 | (green << info->var.green.offset) | | |
484 | (blue << info->var.blue.offset); | |
9da12b6a RC |
485 | if (info->var.transp.length > 0) { |
486 | u32 mask = (1 << info->var.transp.length) - 1; | |
487 | mask <<= info->var.transp.offset; | |
488 | value |= mask; | |
489 | } | |
c850cb78 DA |
490 | palette[regno] = value; |
491 | return 0; | |
492 | } | |
493 | ||
b8c00ac5 DA |
494 | pindex = regno; |
495 | ||
496 | if (fb->bits_per_pixel == 16) { | |
497 | pindex = regno << 3; | |
498 | ||
499 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 500 | return -EINVAL; |
b8c00ac5 | 501 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 502 | return -EINVAL; |
b8c00ac5 DA |
503 | |
504 | if (fb->depth == 16) { | |
505 | u16 r, g, b; | |
506 | int i; | |
507 | if (regno < 32) { | |
508 | for (i = 0; i < 8; i++) | |
509 | fb_helper->funcs->gamma_set(crtc, red, | |
510 | green, blue, pindex + i); | |
511 | } | |
512 | ||
513 | fb_helper->funcs->gamma_get(crtc, &r, | |
514 | &g, &b, | |
515 | pindex >> 1); | |
516 | ||
517 | for (i = 0; i < 4; i++) | |
518 | fb_helper->funcs->gamma_set(crtc, r, | |
519 | green, b, | |
520 | (pindex >> 1) + i); | |
521 | } | |
522 | } | |
523 | ||
524 | if (fb->depth != 16) | |
525 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 526 | return 0; |
b8c00ac5 DA |
527 | } |
528 | ||
068143d3 DA |
529 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
530 | { | |
531 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 532 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
533 | u16 *red, *green, *blue, *transp; |
534 | struct drm_crtc *crtc; | |
062ac622 | 535 | int i, j, rc = 0; |
068143d3 DA |
536 | int start; |
537 | ||
8be48d92 DA |
538 | for (i = 0; i < fb_helper->crtc_count; i++) { |
539 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
540 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
541 | |
542 | red = cmap->red; | |
543 | green = cmap->green; | |
544 | blue = cmap->blue; | |
545 | transp = cmap->transp; | |
546 | start = cmap->start; | |
547 | ||
062ac622 | 548 | for (j = 0; j < cmap->len; j++) { |
068143d3 DA |
549 | u16 hred, hgreen, hblue, htransp = 0xffff; |
550 | ||
551 | hred = *red++; | |
552 | hgreen = *green++; | |
553 | hblue = *blue++; | |
554 | ||
555 | if (transp) | |
556 | htransp = *transp++; | |
557 | ||
c850cb78 DA |
558 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
559 | if (rc) | |
560 | return rc; | |
068143d3 DA |
561 | } |
562 | crtc_funcs->load_lut(crtc); | |
563 | } | |
564 | return rc; | |
565 | } | |
566 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
567 | ||
785b93ef DA |
568 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
569 | struct fb_info *info) | |
570 | { | |
571 | struct drm_fb_helper *fb_helper = info->par; | |
572 | struct drm_framebuffer *fb = fb_helper->fb; | |
573 | int depth; | |
574 | ||
f90ebd9e | 575 | if (var->pixclock != 0 || in_dbg_master()) |
785b93ef DA |
576 | return -EINVAL; |
577 | ||
578 | /* Need to resize the fb object !!! */ | |
62fb376e CW |
579 | if (var->bits_per_pixel > fb->bits_per_pixel || |
580 | var->xres > fb->width || var->yres > fb->height || | |
581 | var->xres_virtual > fb->width || var->yres_virtual > fb->height) { | |
509c7d83 | 582 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " |
62fb376e CW |
583 | "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", |
584 | var->xres, var->yres, var->bits_per_pixel, | |
585 | var->xres_virtual, var->yres_virtual, | |
509c7d83 | 586 | fb->width, fb->height, fb->bits_per_pixel); |
785b93ef DA |
587 | return -EINVAL; |
588 | } | |
589 | ||
590 | switch (var->bits_per_pixel) { | |
591 | case 16: | |
592 | depth = (var->green.length == 6) ? 16 : 15; | |
593 | break; | |
594 | case 32: | |
595 | depth = (var->transp.length > 0) ? 32 : 24; | |
596 | break; | |
597 | default: | |
598 | depth = var->bits_per_pixel; | |
599 | break; | |
600 | } | |
601 | ||
602 | switch (depth) { | |
603 | case 8: | |
604 | var->red.offset = 0; | |
605 | var->green.offset = 0; | |
606 | var->blue.offset = 0; | |
607 | var->red.length = 8; | |
608 | var->green.length = 8; | |
609 | var->blue.length = 8; | |
610 | var->transp.length = 0; | |
611 | var->transp.offset = 0; | |
612 | break; | |
613 | case 15: | |
614 | var->red.offset = 10; | |
615 | var->green.offset = 5; | |
616 | var->blue.offset = 0; | |
617 | var->red.length = 5; | |
618 | var->green.length = 5; | |
619 | var->blue.length = 5; | |
620 | var->transp.length = 1; | |
621 | var->transp.offset = 15; | |
622 | break; | |
623 | case 16: | |
624 | var->red.offset = 11; | |
625 | var->green.offset = 5; | |
626 | var->blue.offset = 0; | |
627 | var->red.length = 5; | |
628 | var->green.length = 6; | |
629 | var->blue.length = 5; | |
630 | var->transp.length = 0; | |
631 | var->transp.offset = 0; | |
632 | break; | |
633 | case 24: | |
634 | var->red.offset = 16; | |
635 | var->green.offset = 8; | |
636 | var->blue.offset = 0; | |
637 | var->red.length = 8; | |
638 | var->green.length = 8; | |
639 | var->blue.length = 8; | |
640 | var->transp.length = 0; | |
641 | var->transp.offset = 0; | |
642 | break; | |
643 | case 32: | |
644 | var->red.offset = 16; | |
645 | var->green.offset = 8; | |
646 | var->blue.offset = 0; | |
647 | var->red.length = 8; | |
648 | var->green.length = 8; | |
649 | var->blue.length = 8; | |
650 | var->transp.length = 8; | |
651 | var->transp.offset = 24; | |
652 | break; | |
653 | default: | |
654 | return -EINVAL; | |
655 | } | |
656 | return 0; | |
657 | } | |
658 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
659 | ||
660 | /* this will let fbcon do the mode init */ | |
661 | int drm_fb_helper_set_par(struct fb_info *info) | |
662 | { | |
663 | struct drm_fb_helper *fb_helper = info->par; | |
664 | struct drm_device *dev = fb_helper->dev; | |
665 | struct fb_var_screeninfo *var = &info->var; | |
666 | struct drm_crtc *crtc; | |
667 | int ret; | |
668 | int i; | |
669 | ||
5349ef31 | 670 | if (var->pixclock != 0) { |
172e91f5 | 671 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
672 | return -EINVAL; |
673 | } | |
674 | ||
84849903 | 675 | drm_modeset_lock_all(dev); |
8be48d92 DA |
676 | for (i = 0; i < fb_helper->crtc_count; i++) { |
677 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
2d13b679 | 678 | ret = drm_mode_set_config_internal(&fb_helper->crtc_info[i].mode_set); |
0b4c0f3f | 679 | if (ret) { |
84849903 | 680 | drm_modeset_unlock_all(dev); |
0b4c0f3f | 681 | return ret; |
785b93ef DA |
682 | } |
683 | } | |
84849903 | 684 | drm_modeset_unlock_all(dev); |
4abe3520 DA |
685 | |
686 | if (fb_helper->delayed_hotplug) { | |
687 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 688 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 689 | } |
785b93ef DA |
690 | return 0; |
691 | } | |
692 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
693 | ||
694 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
695 | struct fb_info *info) | |
696 | { | |
697 | struct drm_fb_helper *fb_helper = info->par; | |
698 | struct drm_device *dev = fb_helper->dev; | |
699 | struct drm_mode_set *modeset; | |
700 | struct drm_crtc *crtc; | |
701 | int ret = 0; | |
702 | int i; | |
703 | ||
84849903 | 704 | drm_modeset_lock_all(dev); |
8be48d92 DA |
705 | for (i = 0; i < fb_helper->crtc_count; i++) { |
706 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
707 | |
708 | modeset = &fb_helper->crtc_info[i].mode_set; | |
709 | ||
710 | modeset->x = var->xoffset; | |
711 | modeset->y = var->yoffset; | |
712 | ||
713 | if (modeset->num_connectors) { | |
2d13b679 | 714 | ret = drm_mode_set_config_internal(modeset); |
785b93ef DA |
715 | if (!ret) { |
716 | info->var.xoffset = var->xoffset; | |
717 | info->var.yoffset = var->yoffset; | |
718 | } | |
719 | } | |
720 | } | |
84849903 | 721 | drm_modeset_unlock_all(dev); |
785b93ef DA |
722 | return ret; |
723 | } | |
724 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
725 | ||
8be48d92 DA |
726 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
727 | int preferred_bpp) | |
785b93ef | 728 | { |
785b93ef DA |
729 | int new_fb = 0; |
730 | int crtc_count = 0; | |
4abe3520 | 731 | int i; |
785b93ef | 732 | struct fb_info *info; |
38651674 | 733 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 734 | int gamma_size = 0; |
38651674 DA |
735 | |
736 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
737 | sizes.surface_depth = 24; | |
738 | sizes.surface_bpp = 32; | |
739 | sizes.fb_width = (unsigned)-1; | |
740 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 741 | |
b8c00ac5 DA |
742 | /* if driver picks 8 or 16 by default use that |
743 | for both depth/bpp */ | |
96081cdf | 744 | if (preferred_bpp != sizes.surface_bpp) |
38651674 | 745 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; |
96081cdf | 746 | |
785b93ef | 747 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
748 | for (i = 0; i < fb_helper->connector_count; i++) { |
749 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
1794d257 | 750 | struct drm_cmdline_mode *cmdline_mode; |
8ef8678c | 751 | |
0b4c0f3f | 752 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
753 | |
754 | if (cmdline_mode->bpp_specified) { | |
755 | switch (cmdline_mode->bpp) { | |
756 | case 8: | |
38651674 | 757 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
758 | break; |
759 | case 15: | |
38651674 DA |
760 | sizes.surface_depth = 15; |
761 | sizes.surface_bpp = 16; | |
d50ba256 DA |
762 | break; |
763 | case 16: | |
38651674 | 764 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
765 | break; |
766 | case 24: | |
38651674 | 767 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
768 | break; |
769 | case 32: | |
38651674 DA |
770 | sizes.surface_depth = 24; |
771 | sizes.surface_bpp = 32; | |
d50ba256 DA |
772 | break; |
773 | } | |
774 | break; | |
775 | } | |
776 | } | |
777 | ||
8be48d92 DA |
778 | crtc_count = 0; |
779 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
780 | struct drm_display_mode *desired_mode; | |
781 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
782 | ||
783 | if (desired_mode) { | |
784 | if (gamma_size == 0) | |
785 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
786 | if (desired_mode->hdisplay < sizes.fb_width) | |
787 | sizes.fb_width = desired_mode->hdisplay; | |
788 | if (desired_mode->vdisplay < sizes.fb_height) | |
789 | sizes.fb_height = desired_mode->vdisplay; | |
790 | if (desired_mode->hdisplay > sizes.surface_width) | |
791 | sizes.surface_width = desired_mode->hdisplay; | |
792 | if (desired_mode->vdisplay > sizes.surface_height) | |
793 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
794 | crtc_count++; |
795 | } | |
796 | } | |
797 | ||
38651674 | 798 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
799 | /* hmm everyone went away - assume VGA cable just fell out |
800 | and will come back later. */ | |
eb1f8e4f | 801 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
802 | sizes.fb_width = sizes.surface_width = 1024; |
803 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
804 | } |
805 | ||
38651674 | 806 | /* push down into drivers */ |
4abe3520 | 807 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
808 | if (new_fb < 0) |
809 | return new_fb; | |
785b93ef | 810 | |
38651674 | 811 | info = fb_helper->fbdev; |
785b93ef | 812 | |
8be48d92 | 813 | /* set the fb pointer */ |
96081cdf | 814 | for (i = 0; i < fb_helper->crtc_count; i++) |
8be48d92 | 815 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; |
785b93ef DA |
816 | |
817 | if (new_fb) { | |
5349ef31 | 818 | info->var.pixclock = 0; |
96081cdf | 819 | if (register_framebuffer(info) < 0) |
785b93ef | 820 | return -EINVAL; |
38651674 | 821 | |
d56b1b9d SK |
822 | dev_info(fb_helper->dev->dev, "fb%d: %s frame buffer device\n", |
823 | info->node, info->fix.id); | |
38651674 | 824 | |
785b93ef DA |
825 | } else { |
826 | drm_fb_helper_set_par(info); | |
827 | } | |
785b93ef DA |
828 | |
829 | /* Switch back to kernel console on panic */ | |
830 | /* multi card linked list maybe */ | |
831 | if (list_empty(&kernel_fb_helper_list)) { | |
d56b1b9d | 832 | dev_info(fb_helper->dev->dev, "registered panic notifier\n"); |
785b93ef DA |
833 | atomic_notifier_chain_register(&panic_notifier_list, |
834 | &paniced); | |
835 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
836 | } | |
38651674 DA |
837 | if (new_fb) |
838 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
839 | ||
785b93ef DA |
840 | return 0; |
841 | } | |
842 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
843 | ||
3632ef89 DA |
844 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
845 | uint32_t depth) | |
846 | { | |
847 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
848 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : | |
849 | FB_VISUAL_TRUECOLOR; | |
850 | info->fix.mmio_start = 0; | |
851 | info->fix.mmio_len = 0; | |
852 | info->fix.type_aux = 0; | |
853 | info->fix.xpanstep = 1; /* doing it in hw */ | |
854 | info->fix.ypanstep = 1; /* doing it in hw */ | |
855 | info->fix.ywrapstep = 0; | |
856 | info->fix.accel = FB_ACCEL_NONE; | |
857 | info->fix.type_aux = 0; | |
858 | ||
859 | info->fix.line_length = pitch; | |
860 | return; | |
861 | } | |
862 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
863 | ||
38651674 | 864 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
865 | uint32_t fb_width, uint32_t fb_height) |
866 | { | |
38651674 DA |
867 | struct drm_framebuffer *fb = fb_helper->fb; |
868 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
869 | info->var.xres_virtual = fb->width; |
870 | info->var.yres_virtual = fb->height; | |
871 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
57084d05 | 872 | info->var.accel_flags = FB_ACCELF_TEXT; |
785b93ef DA |
873 | info->var.xoffset = 0; |
874 | info->var.yoffset = 0; | |
875 | info->var.activate = FB_ACTIVATE_NOW; | |
876 | info->var.height = -1; | |
877 | info->var.width = -1; | |
878 | ||
879 | switch (fb->depth) { | |
880 | case 8: | |
881 | info->var.red.offset = 0; | |
882 | info->var.green.offset = 0; | |
883 | info->var.blue.offset = 0; | |
884 | info->var.red.length = 8; /* 8bit DAC */ | |
885 | info->var.green.length = 8; | |
886 | info->var.blue.length = 8; | |
887 | info->var.transp.offset = 0; | |
888 | info->var.transp.length = 0; | |
889 | break; | |
890 | case 15: | |
891 | info->var.red.offset = 10; | |
892 | info->var.green.offset = 5; | |
893 | info->var.blue.offset = 0; | |
894 | info->var.red.length = 5; | |
895 | info->var.green.length = 5; | |
896 | info->var.blue.length = 5; | |
897 | info->var.transp.offset = 15; | |
898 | info->var.transp.length = 1; | |
899 | break; | |
900 | case 16: | |
901 | info->var.red.offset = 11; | |
902 | info->var.green.offset = 5; | |
903 | info->var.blue.offset = 0; | |
904 | info->var.red.length = 5; | |
905 | info->var.green.length = 6; | |
906 | info->var.blue.length = 5; | |
907 | info->var.transp.offset = 0; | |
908 | break; | |
909 | case 24: | |
910 | info->var.red.offset = 16; | |
911 | info->var.green.offset = 8; | |
912 | info->var.blue.offset = 0; | |
913 | info->var.red.length = 8; | |
914 | info->var.green.length = 8; | |
915 | info->var.blue.length = 8; | |
916 | info->var.transp.offset = 0; | |
917 | info->var.transp.length = 0; | |
918 | break; | |
919 | case 32: | |
920 | info->var.red.offset = 16; | |
921 | info->var.green.offset = 8; | |
922 | info->var.blue.offset = 0; | |
923 | info->var.red.length = 8; | |
924 | info->var.green.length = 8; | |
925 | info->var.blue.length = 8; | |
926 | info->var.transp.offset = 24; | |
927 | info->var.transp.length = 8; | |
928 | break; | |
929 | default: | |
930 | break; | |
931 | } | |
932 | ||
933 | info->var.xres = fb_width; | |
934 | info->var.yres = fb_height; | |
935 | } | |
936 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 937 | |
0b4c0f3f DA |
938 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
939 | uint32_t maxX, | |
940 | uint32_t maxY) | |
38651674 DA |
941 | { |
942 | struct drm_connector *connector; | |
943 | int count = 0; | |
0b4c0f3f | 944 | int i; |
38651674 | 945 | |
0b4c0f3f DA |
946 | for (i = 0; i < fb_helper->connector_count; i++) { |
947 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
948 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
949 | } | |
950 | ||
951 | return count; | |
952 | } | |
953 | ||
0b4c0f3f | 954 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
955 | { |
956 | struct drm_display_mode *mode; | |
957 | ||
0b4c0f3f | 958 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
959 | if (drm_mode_width(mode) > width || |
960 | drm_mode_height(mode) > height) | |
961 | continue; | |
962 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
963 | return mode; | |
964 | } | |
965 | return NULL; | |
966 | } | |
967 | ||
0b4c0f3f | 968 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 969 | { |
1794d257 | 970 | struct drm_cmdline_mode *cmdline_mode; |
0b4c0f3f | 971 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
972 | return cmdline_mode->specified; |
973 | } | |
974 | ||
0b4c0f3f DA |
975 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
976 | int width, int height) | |
38651674 | 977 | { |
1794d257 | 978 | struct drm_cmdline_mode *cmdline_mode; |
38651674 DA |
979 | struct drm_display_mode *mode = NULL; |
980 | ||
0b4c0f3f | 981 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
982 | if (cmdline_mode->specified == false) |
983 | return mode; | |
984 | ||
985 | /* attempt to find a matching mode in the list of modes | |
986 | * we have gotten so far, if not add a CVT mode that conforms | |
987 | */ | |
988 | if (cmdline_mode->rb || cmdline_mode->margins) | |
989 | goto create_mode; | |
990 | ||
0b4c0f3f | 991 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
992 | /* check width/height */ |
993 | if (mode->hdisplay != cmdline_mode->xres || | |
994 | mode->vdisplay != cmdline_mode->yres) | |
995 | continue; | |
996 | ||
997 | if (cmdline_mode->refresh_specified) { | |
998 | if (mode->vrefresh != cmdline_mode->refresh) | |
999 | continue; | |
1000 | } | |
1001 | ||
1002 | if (cmdline_mode->interlace) { | |
1003 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
1004 | continue; | |
1005 | } | |
1006 | return mode; | |
1007 | } | |
1008 | ||
1009 | create_mode: | |
1794d257 CW |
1010 | mode = drm_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev, |
1011 | cmdline_mode); | |
0b4c0f3f | 1012 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
1013 | return mode; |
1014 | } | |
1015 | ||
1016 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
1017 | { | |
1018 | bool enable; | |
1019 | ||
96081cdf | 1020 | if (strict) |
38651674 | 1021 | enable = connector->status == connector_status_connected; |
96081cdf | 1022 | else |
38651674 | 1023 | enable = connector->status != connector_status_disconnected; |
96081cdf | 1024 | |
38651674 DA |
1025 | return enable; |
1026 | } | |
1027 | ||
0b4c0f3f DA |
1028 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1029 | bool *enabled) | |
38651674 DA |
1030 | { |
1031 | bool any_enabled = false; | |
1032 | struct drm_connector *connector; | |
1033 | int i = 0; | |
1034 | ||
0b4c0f3f DA |
1035 | for (i = 0; i < fb_helper->connector_count; i++) { |
1036 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1037 | enabled[i] = drm_connector_enabled(connector, true); |
1038 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1039 | enabled[i] ? "yes" : "no"); | |
1040 | any_enabled |= enabled[i]; | |
38651674 DA |
1041 | } |
1042 | ||
1043 | if (any_enabled) | |
1044 | return; | |
1045 | ||
0b4c0f3f DA |
1046 | for (i = 0; i < fb_helper->connector_count; i++) { |
1047 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1048 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1049 | } |
1050 | } | |
1051 | ||
1d42bbc8 DA |
1052 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1053 | struct drm_display_mode **modes, | |
1054 | bool *enabled, int width, int height) | |
1055 | { | |
1056 | int count, i, j; | |
1057 | bool can_clone = false; | |
1058 | struct drm_fb_helper_connector *fb_helper_conn; | |
1059 | struct drm_display_mode *dmt_mode, *mode; | |
1060 | ||
1061 | /* only contemplate cloning in the single crtc case */ | |
1062 | if (fb_helper->crtc_count > 1) | |
1063 | return false; | |
1064 | ||
1065 | count = 0; | |
1066 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1067 | if (enabled[i]) | |
1068 | count++; | |
1069 | } | |
1070 | ||
1071 | /* only contemplate cloning if more than one connector is enabled */ | |
1072 | if (count <= 1) | |
1073 | return false; | |
1074 | ||
1075 | /* check the command line or if nothing common pick 1024x768 */ | |
1076 | can_clone = true; | |
1077 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1078 | if (!enabled[i]) | |
1079 | continue; | |
1080 | fb_helper_conn = fb_helper->connector_info[i]; | |
1081 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1082 | if (!modes[i]) { | |
1083 | can_clone = false; | |
1084 | break; | |
1085 | } | |
1086 | for (j = 0; j < i; j++) { | |
1087 | if (!enabled[j]) | |
1088 | continue; | |
1089 | if (!drm_mode_equal(modes[j], modes[i])) | |
1090 | can_clone = false; | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | if (can_clone) { | |
1095 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1096 | return true; | |
1097 | } | |
1098 | ||
1099 | /* try and find a 1024x768 mode on each connector */ | |
1100 | can_clone = true; | |
f6e252ba | 1101 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60, false); |
1d42bbc8 DA |
1102 | |
1103 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1104 | ||
1105 | if (!enabled[i]) | |
1106 | continue; | |
1107 | ||
1108 | fb_helper_conn = fb_helper->connector_info[i]; | |
1109 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1110 | if (drm_mode_equal(mode, dmt_mode)) | |
1111 | modes[i] = mode; | |
1112 | } | |
1113 | if (!modes[i]) | |
1114 | can_clone = false; | |
1115 | } | |
1116 | ||
1117 | if (can_clone) { | |
1118 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1119 | return true; | |
1120 | } | |
1121 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1122 | return false; | |
1123 | } | |
1124 | ||
0b4c0f3f | 1125 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1126 | struct drm_display_mode **modes, |
1127 | bool *enabled, int width, int height) | |
1128 | { | |
0b4c0f3f DA |
1129 | struct drm_fb_helper_connector *fb_helper_conn; |
1130 | int i; | |
38651674 | 1131 | |
0b4c0f3f DA |
1132 | for (i = 0; i < fb_helper->connector_count; i++) { |
1133 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1134 | |
0b4c0f3f | 1135 | if (enabled[i] == false) |
38651674 | 1136 | continue; |
38651674 DA |
1137 | |
1138 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1139 | fb_helper_conn->connector->base.id); |
38651674 DA |
1140 | |
1141 | /* got for command line mode first */ | |
0b4c0f3f | 1142 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1143 | if (!modes[i]) { |
1144 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1145 | fb_helper_conn->connector->base.id); |
1146 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1147 | } |
1148 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1149 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1150 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1151 | break; |
1152 | } | |
1153 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1154 | "none"); | |
38651674 DA |
1155 | } |
1156 | return true; | |
1157 | } | |
1158 | ||
8be48d92 DA |
1159 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1160 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1161 | struct drm_display_mode **modes, |
1162 | int n, int width, int height) | |
1163 | { | |
1164 | int c, o; | |
8be48d92 | 1165 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1166 | struct drm_connector *connector; |
1167 | struct drm_connector_helper_funcs *connector_funcs; | |
1168 | struct drm_encoder *encoder; | |
8be48d92 | 1169 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1170 | int my_score, best_score, score; |
8be48d92 | 1171 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1172 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1173 | |
0b4c0f3f | 1174 | if (n == fb_helper->connector_count) |
38651674 | 1175 | return 0; |
0b4c0f3f DA |
1176 | |
1177 | fb_helper_conn = fb_helper->connector_info[n]; | |
1178 | connector = fb_helper_conn->connector; | |
38651674 DA |
1179 | |
1180 | best_crtcs[n] = NULL; | |
1181 | best_crtc = NULL; | |
8be48d92 | 1182 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1183 | if (modes[n] == NULL) |
1184 | return best_score; | |
1185 | ||
8be48d92 DA |
1186 | crtcs = kzalloc(dev->mode_config.num_connector * |
1187 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1188 | if (!crtcs) |
1189 | return best_score; | |
1190 | ||
1191 | my_score = 1; | |
1192 | if (connector->status == connector_status_connected) | |
1193 | my_score++; | |
0b4c0f3f | 1194 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1195 | my_score++; |
0b4c0f3f | 1196 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1197 | my_score++; |
1198 | ||
1199 | connector_funcs = connector->helper_private; | |
1200 | encoder = connector_funcs->best_encoder(connector); | |
1201 | if (!encoder) | |
1202 | goto out; | |
1203 | ||
38651674 DA |
1204 | /* select a crtc for this connector and then attempt to configure |
1205 | remaining connectors */ | |
8be48d92 DA |
1206 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1207 | crtc = &fb_helper->crtc_info[c]; | |
38651674 | 1208 | |
96081cdf | 1209 | if ((encoder->possible_crtcs & (1 << c)) == 0) |
38651674 | 1210 | continue; |
38651674 DA |
1211 | |
1212 | for (o = 0; o < n; o++) | |
1213 | if (best_crtcs[o] == crtc) | |
1214 | break; | |
1215 | ||
1216 | if (o < n) { | |
1d42bbc8 DA |
1217 | /* ignore cloning unless only a single crtc */ |
1218 | if (fb_helper->crtc_count > 1) | |
1219 | continue; | |
1220 | ||
1221 | if (!drm_mode_equal(modes[o], modes[n])) | |
1222 | continue; | |
38651674 DA |
1223 | } |
1224 | ||
1225 | crtcs[n] = crtc; | |
8be48d92 DA |
1226 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1227 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1228 | width, height); |
1229 | if (score > best_score) { | |
1230 | best_crtc = crtc; | |
1231 | best_score = score; | |
1232 | memcpy(best_crtcs, crtcs, | |
1233 | dev->mode_config.num_connector * | |
8be48d92 | 1234 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1235 | } |
38651674 DA |
1236 | } |
1237 | out: | |
1238 | kfree(crtcs); | |
1239 | return best_score; | |
1240 | } | |
1241 | ||
8be48d92 | 1242 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1243 | { |
8be48d92 DA |
1244 | struct drm_device *dev = fb_helper->dev; |
1245 | struct drm_fb_helper_crtc **crtcs; | |
38651674 | 1246 | struct drm_display_mode **modes; |
8be48d92 | 1247 | struct drm_mode_set *modeset; |
38651674 DA |
1248 | bool *enabled; |
1249 | int width, height; | |
1250 | int i, ret; | |
1251 | ||
1252 | DRM_DEBUG_KMS("\n"); | |
1253 | ||
1254 | width = dev->mode_config.max_width; | |
1255 | height = dev->mode_config.max_height; | |
1256 | ||
38651674 | 1257 | crtcs = kcalloc(dev->mode_config.num_connector, |
8be48d92 | 1258 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1259 | modes = kcalloc(dev->mode_config.num_connector, |
1260 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1261 | enabled = kcalloc(dev->mode_config.num_connector, | |
1262 | sizeof(bool), GFP_KERNEL); | |
8c5eaca0 SK |
1263 | if (!crtcs || !modes || !enabled) { |
1264 | DRM_ERROR("Memory allocation failed\n"); | |
1265 | goto out; | |
1266 | } | |
1267 | ||
38651674 | 1268 | |
0b4c0f3f | 1269 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1270 | |
1d42bbc8 DA |
1271 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1272 | if (!ret) { | |
1273 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1274 | if (!ret) | |
1275 | DRM_ERROR("Unable to find initial modes\n"); | |
1276 | } | |
38651674 DA |
1277 | |
1278 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1279 | ||
8be48d92 DA |
1280 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1281 | ||
1282 | /* need to set the modesets up here for use later */ | |
1283 | /* fill out the connector<->crtc mappings into the modesets */ | |
1284 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1285 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1286 | modeset->num_connectors = 0; | |
1287 | } | |
38651674 | 1288 | |
0b4c0f3f | 1289 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1290 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1291 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1292 | modeset = &fb_crtc->mode_set; | |
38651674 | 1293 | |
8be48d92 | 1294 | if (mode && fb_crtc) { |
38651674 | 1295 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1296 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1297 | fb_crtc->desired_mode = mode; | |
1298 | if (modeset->mode) | |
1299 | drm_mode_destroy(dev, modeset->mode); | |
1300 | modeset->mode = drm_mode_duplicate(dev, | |
1301 | fb_crtc->desired_mode); | |
0b4c0f3f | 1302 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1303 | } |
38651674 DA |
1304 | } |
1305 | ||
8c5eaca0 | 1306 | out: |
38651674 DA |
1307 | kfree(crtcs); |
1308 | kfree(modes); | |
1309 | kfree(enabled); | |
1310 | } | |
1311 | ||
1312 | /** | |
1313 | * drm_helper_initial_config - setup a sane initial connector configuration | |
d0ddc033 DV |
1314 | * @fb_helper: fb_helper device struct |
1315 | * @bpp_sel: bpp value to use for the framebuffer configuration | |
38651674 DA |
1316 | * |
1317 | * LOCKING: | |
d0ddc033 DV |
1318 | * Called at init time by the driver to set up the @fb_helper initial |
1319 | * configuration, must take the mode config lock. | |
38651674 | 1320 | * |
d0ddc033 | 1321 | * Scans the CRTCs and connectors and tries to put together an initial setup. |
38651674 DA |
1322 | * At the moment, this is a cloned configuration across all heads with |
1323 | * a new framebuffer object as the backing store. | |
1324 | * | |
1325 | * RETURNS: | |
1326 | * Zero if everything went ok, nonzero otherwise. | |
1327 | */ | |
4abe3520 | 1328 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1329 | { |
8be48d92 | 1330 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1331 | int count = 0; |
1332 | ||
1333 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1334 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1335 | |
0b4c0f3f | 1336 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1337 | |
0b4c0f3f DA |
1338 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1339 | dev->mode_config.max_width, | |
1340 | dev->mode_config.max_height); | |
38651674 DA |
1341 | /* |
1342 | * we shouldn't end up with no modes here. | |
1343 | */ | |
96081cdf | 1344 | if (count == 0) |
d56b1b9d | 1345 | dev_info(fb_helper->dev->dev, "No connectors reported connected with modes\n"); |
96081cdf | 1346 | |
8be48d92 | 1347 | drm_setup_crtcs(fb_helper); |
38651674 | 1348 | |
4abe3520 | 1349 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1350 | } |
8be48d92 | 1351 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1352 | |
7394371d CW |
1353 | /** |
1354 | * drm_fb_helper_hotplug_event - respond to a hotplug notification by | |
d0ddc033 | 1355 | * probing all the outputs attached to the fb |
7394371d CW |
1356 | * @fb_helper: the drm_fb_helper |
1357 | * | |
1358 | * LOCKING: | |
1359 | * Called at runtime, must take mode config lock. | |
1360 | * | |
1361 | * Scan the connectors attached to the fb_helper and try to put together a | |
1362 | * setup after *notification of a change in output configuration. | |
1363 | * | |
1364 | * RETURNS: | |
1365 | * 0 on success and a non-zero error code otherwise. | |
1366 | */ | |
1367 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) | |
38651674 | 1368 | { |
7394371d | 1369 | struct drm_device *dev = fb_helper->dev; |
5c4426a7 | 1370 | int count = 0; |
4abe3520 | 1371 | u32 max_width, max_height, bpp_sel; |
343065a6 | 1372 | int bound = 0, crtcs_bound = 0; |
4abe3520 | 1373 | struct drm_crtc *crtc; |
5c4426a7 | 1374 | |
eb1f8e4f | 1375 | if (!fb_helper->fb) |
7394371d | 1376 | return 0; |
4abe3520 | 1377 | |
84849903 | 1378 | drm_modeset_lock_all(dev); |
7394371d | 1379 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
4abe3520 | 1380 | if (crtc->fb) |
343065a6 | 1381 | crtcs_bound++; |
4abe3520 | 1382 | if (crtc->fb == fb_helper->fb) |
343065a6 | 1383 | bound++; |
4abe3520 DA |
1384 | } |
1385 | ||
343065a6 | 1386 | if (bound < crtcs_bound) { |
4abe3520 | 1387 | fb_helper->delayed_hotplug = true; |
84849903 | 1388 | drm_modeset_unlock_all(dev); |
7394371d | 1389 | return 0; |
4abe3520 | 1390 | } |
eb1f8e4f | 1391 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1392 | |
eb1f8e4f DA |
1393 | max_width = fb_helper->fb->width; |
1394 | max_height = fb_helper->fb->height; | |
1395 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1396 | |
eb1f8e4f DA |
1397 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1398 | max_height); | |
1399 | drm_setup_crtcs(fb_helper); | |
84849903 | 1400 | drm_modeset_unlock_all(dev); |
4abe3520 | 1401 | |
eb1f8e4f | 1402 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1403 | } |
eb1f8e4f | 1404 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1405 | |
6a108a14 | 1406 | /* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT) |
3ce05168 DF |
1407 | * but the module doesn't depend on any fb console symbols. At least |
1408 | * attempt to load fbcon to avoid leaving the system without a usable console. | |
1409 | */ | |
6a108a14 | 1410 | #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT) |
3ce05168 DF |
1411 | static int __init drm_fb_helper_modinit(void) |
1412 | { | |
1413 | const char *name = "fbcon"; | |
1414 | struct module *fbcon; | |
1415 | ||
1416 | mutex_lock(&module_mutex); | |
1417 | fbcon = find_module(name); | |
1418 | mutex_unlock(&module_mutex); | |
1419 | ||
1420 | if (!fbcon) | |
1421 | request_module_nowait(name); | |
1422 | return 0; | |
1423 | } | |
1424 | ||
1425 | module_init(drm_fb_helper_modinit); | |
1426 | #endif |